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Search The Contents Of A File
Make File With Some Content
echo "There were 24 sales in March." >> sales.txt
echo "We have 90 employees." >> employees.txt
Search The File For Some String
grep March sales.txt
There were 24 sales in March.
Search The File For Some String, Return With Line Numbers
grep -n March sales.txt
1:There were 24 sales in March.
Get Filenames That Match Search
grep -l March sales.txt
sales.txt